Jennifer Aniston and Justin Theroux arrived at the Oscars and posed for photographs with their arms around each other on the red carpet. The Friends actress wore a beautiful red Valentino gown as her fiance kept close.

Speculation that Aniston is pregnant has been sparked once again as Theroux was seen placing his hand over her belly on the red carpet.

Rumors of Aniston being pregnant have been swirling since last year, with the latest rumor suggesting that she is already planning a "post pregnancy makeover" after she gives birth to her first child.

Despite constant rumors, both Aniston and Theroux have not confirmed anything, leading fans to wonder whether the actress will ever announce a pregnancy.

Another rumor last month alleged that the actress is pregnant with twins.

OK! Magazine featured a story with the headline, "Getting Ready for Twins" last month. The magazine showed Aniston with her 41-year-old fiance, wiht the cover stating that plans were already underway for the birth as well as a nursery and details on potential godparents, according to CelebDirtyLaundry.

Many pregnancy rumors died down when Aniston was spotted over the Christmas holidays with flat abs in a bikini lounging poolside - defying all rumors.

Theroux and Aniston got engaged in 2012 and are expected to tie the knot later this year.